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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2015.1
- 수록면
- 81 - 95 (15page)
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초록· 키워드
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Several properties of aftershock series related to themain shocks of Landers, Northridge and Hector Mine (southern California, USA) are reproduced by theDynamic Fiber Bundle Model, DFBM. Optimum values for the three parameters governing DFBM aredetermined by searching for the best agreement of real aftershock series properties and those ofsynthetic sequences gen- erated by this model. The analysis of the model parameter values providesdetails on the underlying physical mechanism of the after- shock sequence generation. First, theratio of seismic energy radiated as seismic waves and transferred as stress-strain to adjacentfaults; second, the degree of stress heterogeneity reproducing the complex behavior of realaftershock series. Additionally, the results of simula- tions support the coexistence of two typesof relaxation processes. One of them is associated with the well-known modified Omori’s (MO) law,which involves elapsed times between consecutive after- shocks monotonically increasing; the otheris manifested by episodes of sudden stress release, with inter-event times much shorter than thosepredicted by MO law. These episodes are assumed to be a consequence of the complex distribution oftectonic stresses and fault geometry. The first process is associated to events designed as leadingaftershocks, LA. The second process generates series of events which are designed as cascades, CA.
It is worth of mention that several properties con- cerning CAs can be reasonably related tocritical changes on stressfield along the simulation process.
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참고문헌 (32)
참고문헌 신청
Bak, P. / 1988 / Self-organized criticality / Physical Review A 38:364~374
Bak, P. / 1990 / A forest-fire model and some thoughts on turbulence / Physical Letters A 147:297~300
Barriere, B. / 1994 / Seismicity and self-organized criticality / Physical Review E49:1151~1160
Carlson, J.M. / 1989 / Mechanical model of an earthquake fault / Physical Review A 40:6470~6484
Coleman, B.D / 1957 / Time dependence of mechanical breakdown in bundles of fibers / Journal of Applied Physics 28:1058~1064
Bak, P. / 1990 / A forest-fire model and some thoughts on turbulence / Physical Letters A 147:297~300
Barriere, B. / 1994 / Seismicity and self-organized criticality / Physical Review E49:1151~1160
Carlson, J.M. / 1989 / Mechanical model of an earthquake fault / Physical Review A 40:6470~6484
Coleman, B.D / 1957 / Time dependence of mechanical breakdown in bundles of fibers / Journal of Applied Physics 28:1058~1064
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